Wrench



E. W. BULLARD.

WRENCH.

APPLICATION FILED AUG. I3. 1920.

Patented Feb. 1, 1921.

UNITED STATES PATENT OFFICE.

EDWIN W. BULLARD, OF WHITNEYVILLE, CONNECTICUT, ASSIGNOR TO WINCHESTER w REPEA'IING ARMS CO., 0]? NEW HAVEN, CONNECTICUT, A CORPORATION.

WRENCH.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed August 13, 1920. Serial No. 403,198.

To an whom it may concern:

Be it known that I, EDWIN W. BULLARD, a citizen of the United States, residing at Whitneyville, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Wrenches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description or the same, and which said drawings constitute part oi this application, and represent, i11-- Figure 1, a plan view ot one form which my improved wrench may assume. 0

Fig. 2, an edge view thereof showlng the wrench as loosely applied to a b0'1t-headhaving a wrench-retaining flange.

Fig. 3, a plan View of the wrench with the bolt-head in section on the line 3-3 of Fig. 2.

1* lg. 4:, a corresponding v1ew showlng the bolt-head in section, but as shifted to the other gripping-arm of the operatingopening of the wrench and also showing the bolt-head by broken lines in. its intermed1ate position in the clearance portion, of the said opening.

F ig. 5, a broken plan view of one of the modified forms which my invention may assume.

My invention relates to an improved wrench designed with particular reference to being permanently applied to any bolthead which it is frequently necessary to adjust but not so limited in use since it is also adapted to be used in the manner of an ordlnary wrench, the object being to produce a simple and convenient wrench of the type described.

With these ends in view my invention consists in a wrench formed with an operatring-opening having communicating gripping-and clearance portions. My invention further consists in certain details of construction as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, I employ a fiat one-piece wrench having a handle 6 and a head 7, the latter being pierced to form a closed 0perat1ngopening having complementary gripping arms 8 and 9 communicating with a centrally arranged arcuate clearance portion 10, the axes of the gripping arms 8 and 9 being right-angles and the axis of the clearance portion 10 being coincident with the axis of the handle 6. This operatingopening may be described as consisting of two short rectangular arms symmetrically diverging from an arcuate body-portion.

As shown, the wrench is permanently ap-- plied to a bolt having a polygonal head 11 formed with an overhanging flange 12, and a threaded stem 13, the wrench being applied to the bolt before the bolt is put in place, whereby it is permanently although loosely mounted thereupon for use as occasion may require. By sliding the wrench upon the bolt-head the same may be centered in the arcuate clearance-portion of the operating-opening of the wrench, which permits the wrench to be turned irrespective of the bolt after which the wrench may have either one of the gripping arms of its said opening re'e'ngaged with the bolt-head as most convenient for getting anew grip thereupon.

In the modified form of wrench shown by Fig. 5, its head 14 is formed with an operatwing-opening having a single rectangular gripping-arm 15 and an arcuate clearance portion 16 both located in line with the axis of the wrench. This form of wrench operates on the principle of the form shown in Figs. 1 to 4 inclusive, but is less compact and requires greater clearance about the bolt-head for the wrench-handle.

I claim:

A wrench formed with a pierced head, the pierced opening whereof is symmetrical with respect to the axis of the wrench and having a continuous boundary and comprising an arcuate clearance-portion and two rectangular gripping-portions each of which communicates with the said arcuate clearance portion.

In testimony whereof, I havesigned this specification in the presence of two subscribing witnesses.

EDWIN W. BULLARD.

Witnesses:

ERIK S. PALMER, A. E. HODGSON. 

